Like the induction furnace. But a macerator. And using Rotation Speed instead of Heat. It would have a recipe something like this:
Where R=Refined iron, M=Macerator, and A=advanced machine block.
It would be used to create a Macerator counterpart to the Induction Furnace, so you don't spend hours waiting for your macerators and spend seconds smelting in your Induction Furnace.
Edit: It would have 1 input slot, but 2 output slots. So you can Macerate an entire stack of stuff without deloading it halfway. And it would also macerate at full charge 2x the speed of the induction furnace, so they would take the same time to do the same task. I.E you put a stack of iron ore into the Rotary Macerator and then you put the 2 stacks of dust into the furnace and it takes the same time to smelt as it did to macerate.